package ooday01;

public class ConsDemo {
    public static void main(String[] args) {
        Student zs =new Student();
        Student ls =new Student("李四",24);
        Student ww =new  Student("王五",23,"云居山","12asd");

        zs.sayHI();
        ls.sayHI();
        ww.sayHI();


    }
}
